تحميل كتاب مقدمة بسيطة في التحليل الطيفي SPECTROSCOPY مجموعه مؤلفين PDF

تحميل كتاب مقدمة بسيطة في التحليل الطيفي SPECTROSCOPY pdf مقدمة بسيطة في التحليل الطيفي SPECTROSCOPY من كتب علمية Electromagnetic Spectrum Electromagnetic Radiation Light can exist as: Particles (photons) Waves Waves --Wavelength-- Frequency (n) is the number of waves that pass any given point per second. l 3 Wave Properties Period (p) – the time required for the passage of successive maxima through a fixed point in space. Frequency (n) – the number of oscillations of the field that occur per second. Equal to 1/p. Determined by source and remains invariant regardless of media traversed. Velocity (v) – the rate at which a wave front moves through a medium. Dependent on composition of medium and frequency. Wave Properties (continued) Wavelength (l) – the linear distance between successive maxima or minima of a wave. The wavelength must decrease as radiation passes from a vacuum to some other medium. Wavenumber (s) – the number of waves per centimeter. .